Brand new WoW player HELP

I’m a brand new wow player, playing anniversary tbc(I don’t care for the go play retail comments), I’m finding levelling extremely slow (which I know it is anyway), am I being knowledge gapped right now?

I’m a level 17 undead mage on tbc classic server, I’m playing with a bunch of friends, but atm diff time zones and work means I’m playing on my own a lot.

Can anyone give me some guides/knowledge to level quicker? Gold isn’t really an issue.

Im looking for meta levelling like 10-20 go here and farm this etc.